Visi - 12:26 am on Mar 28, 2006 (gmt 0)
Since the inception of "smart pricing" Google has also changed the methods for rate calculations to adwords users, including the addition of a quality score. The basic formula stays the same however with higher click rates being rewarded with lower costing to the advertisers. At the same time Google is calculating the highest paying ads to be displayed by the same basic formula...namely epcm....not necessarily epc. Just my opinion on the discussion here.